made, prompting this exchange. >> mr. vice president, i know you're under a lot of duress... >> ( laughs ) >> ...to make up for lost ground, but i think people would be better served if we don't keep interrupting each other. >> well, don't take all the four minutes, then. >> woodruff: the president was quick to hail that performance immediately after the debate. >> i thought joe biden was terrific tonight. i could not be prouder of him. i thought he made a very strong case. >> woodruff: republican ryan sounded upbeat about how he'd done at a diner this morning before leaving lexington, kentucky. >> i felt great about it. >> reporter: did you feel knocked around by him? >> no, it's what i expected. >> woodruff: and mitt romney praised his running mate in richmond, virginia. >> there was one person onstage last night who was thoughtful and respectful, steady and poised, the kind of person you want to turn to in... in a crisis. and that was the next vice- president of the united states, paul ryan. >> woodruff: much of the da